Topic Last Modified: 2008-12-09

The Microsoft Exchange Analyzer Tool queries the CIM_Datafile Microsoft Windows® Management Instrumentation (WMI) class to determine the version of the LBService.dll file.

If the Exchange Analyzer determines that the version number for the LBService.dll file is less than 6.0.6001.22276, the Exchange Analyzer displays an error.

This error means that an update is required for the load balancing functionality of Microsoft Exchange Client Access servers to work correctly with Outlook Anywhere.

To address this error, you must download and install the Exchange Server hotfix that is described in Microsoft Knowledge Base article 958178, "A Windows Server 2008 update lets you use the RPC redirection (RDR) interface to enable or disable custom load balancing based on server name and port number" (